The temperature control of the cabinet adopts GCD-23A intelligent computer temperature control and PLC automatic control system. The temperature signal is collected with platinum resistance. The temperature controller is compared with the set value to obtain the PID control signal, and the PLC program controller output. The control signal controls the solid state relay SSR to conduct, and the solid state relay controls the heater to heat, so that the cabinet is in the temperature rising and dehumidifying stage.
When the temperature inside the box drops ≤40 °C, the temperature controller outputs a control signal to the PLC, and the PLC output turns off the hot air circulation fan, and the dry sterilization cycle program ends. TEED-2001K over-temperature alarm temperature controller output signal controls the operation of the whole PLC program. The platinum resistance PT100 test signal is compared with the alarm temperature controller and the over-temperature alarm setting temperature value. When the actual temperature value is lower than the set value, the output is output. The control signal is sent to the PLC, and the PLC program runs normally. When the actual temperature value exceeds the set value, the control signal is output to the PLC, and the PLC closes the running program. Therefore, the setting value of the over temperature alarm is generally higher than the set value of the working temperature.
HUMGINE products: constant temperature and humidity test chamber, high and low temperature test machine, clean oven, blast drying oven, constant temperature drying oven, moisture proof cabinet, nitrogen oven, high and low temperature box, incubator
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